Rhyolite felsic cooled fast extrusive fine Scorria mafic cooled fast extrusive texture fine Granite felsic cooled slowly intrusive texture coarse Andesite mafic cooled fast extrusive texture fine Diorite felsic cooled slow intrusive coarse Basalt mafic cooled fast extrusive fine Pumice felsic cooled fast extrusive texture fine Gabbro mafic cooled both both intrusive and extrusive porphyritic Obsidian felsic cooled fast extrustive texture glassy
Sedimentary Rocks
Conglomerate clastic sorted poorly Coal organic stratifacation black in color Limestone chemical sorted poorly has geodes fizzes when acid is applied Brecchia clastic sorted poorly stratifacation Shale clastic sorted well fossil Chert clastic sorted well stratifacation Sandstoneclastic sorted well stratifaction Coquina organic has seashells Siltstone clastic sorted well stratifacation
Metamorphic Rocks
Quartzite non foliated firmed by heat Marblenon foliated formed by heat white or tan in color Schist foliated formed by pressure Gneiss foliated formed by pressure Slate foliated formed by pressure black in color with layers
Rhyolite felsic cooled fast extrusive fine
Scorria mafic cooled fast extrusive texture fine
Granite felsic cooled slowly intrusive texture coarse
Andesite mafic cooled fast extrusive texture fine
Diorite felsic cooled slow intrusive coarse
Basalt mafic cooled fast extrusive fine
Pumice felsic cooled fast extrusive texture fine
Gabbro mafic cooled both both intrusive and extrusive porphyritic
Obsidian felsic cooled fast extrustive texture glassy
Sedimentary Rocks
Conglomerate clastic sorted poorly
Coal organic stratifacation black in color
Limestone chemical sorted poorly has geodes fizzes when acid is applied
Brecchia clastic sorted poorly stratifacation
Shale clastic sorted well fossil
Chert clastic sorted well stratifacation
Sandstone clastic sorted well stratifaction
Coquina organic has seashells
Siltstone clastic sorted well stratifacation
Metamorphic Rocks
Quartzite non foliated firmed by heat
Marble non foliated formed by heat white or tan in color
Schist foliated formed by pressure
Gneiss foliated formed by pressure
Slate foliated formed by pressure black in color with layers